Bridge Bands ATR (Overlay) Shane

Hurst-Adaptive Volatility Bands



A fractal-inspired evolution of Bollinger and Keltner bands that adapts dynamically to both volatility and trend persistence.

This indicator estimates the Hurst exponent (H) — a measure of market memory — and adjusts a standard volatility band to lean in the direction of the prevailing trend.

When H > 0.5, markets exhibit persistence (trending behavior); the bands shift in the trend’s direction.

When H < 0.5, markets are mean-reverting; the bands flatten and recent extremes become potential fade zones.

Band width scales with recent volatility (σ), expanding in turbulent conditions and contracting during calm periods.



Key Features:

Adaptive offset using the Hurst exponent

Volatility-sensitive width for dynamic market regimes

EMA baseline with directional bias

Clear visual separation between trending and choppy phases



Inspired by Benoit Mandelbrot’s The Misbehavior of Markets and H.E. Hurst’s original work on long-term memory in time series.

Use it to identify regime shifts, trend-following entries, and volatility-adjusted stop levels.

Credit for this script goes to a number of people including Steve B, MichaalAngle, doc and joecat808. 500 day DEMA (double EMA) can be used as a longer term momentum line.